PT-2023-12244 · Htmodoc+3 · Htmodoc+3

Chibataiki · Published 2023-07-18 · Updated 2025-01-08 · CVE-2021-34121

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions htmodoc version 1.9.12

Description An Out of Bounds flaw was discovered in the parse tree() function in toc.cxx, which possibly leads to memory layout information leaking in the data. This might be used in a chain of issues to reach code execution.

Recommendations For version 1.9.12, consider restricting access to the parse tree() function in toc.cxx until a patch is available. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

CVE-2021-34121

USN-7189-1

Affected Products

Debian

Linuxmint

Ubuntu

Htmodoc

References · 22

• 🔥 https://github.com/michaelrsweet/htmldoc/issues/433 · Exploit
• https://github.com/michaelrsweet/htmldoc/commit/c67bbd8756f015e33e4ba639a40c7f9d8bd9e8ab · Patch
• https://ubuntu.com/security/CVE-2021-43579 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-34121 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-23191 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-34121 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-34121 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-26252 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-20308 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-23206 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-34119 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-34121 · Security Note
• https://ubuntu.com/security/CVE-2021-26948 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2021-34121 · Vendor Advisory
• https://osv.dev/vulnerability/USN-7189-1 · Vendor Advisory